ASTM A242/A242M-00a

1.1 This specification covers high-strength low-alloy structural steel shapes, plates, and bars for welded, riveted, or bolted construction intended primarily for use as structural members where savings in weight [mass] or added durability are important. The atmospheric corrosion resistance of the steel in most environments is substantially better than that of carbon structural steels with or without copper addition. When properly exposed to the atmosphere, this steel can be used bare (unpainted) for many applications (see Note 1). This specification is limited to material up to 4 in. [100 mm], inclusive, in thickness.

Note 1—For methods of estimating the atmospheric corrosion resistance of low-alloy steels, see Guide G101.

1.2 When the steel is to be welded, it is presupposed that a welding procedure suitable for the grade of steel and intended use or service will be utilized. See Appendix X3 of Specification A6/A6M for information on weldability.

1.3 The values stated in either inch-pound units or SI units are to be regarded as standard. Within the text, the SI units are shown in brackets. The values stated in each system are not exact equivalents; therefore, each system must be used independently of the other. Combining values from the two systems may result in nonconformance with the specification.

1.4 For structural products produced from coil, the additional requirements, including additional testing requirements and the reporting of additional test results, of Specification A6/A6M apply.

2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

ASTM Standards

Keywords

atmospheric corrosion resistance; bars; bolted construction; durability; high-strength; low-alloy; plates; riveted construction; shapes; steel; structural steel; weight; welded construction, Basic-oxygen steel; Corrosion-resistant steel--specifications; Corrosive service applications--bars/rods/shapes; Durability; HSLA (high-strength low-alloy) steel--specifications; Riveted construction--specifications; Steel bars--specifications; Structural steel (SS) bars--specifications; Structural steel (SS) plate--specifications; Structural steel (SS) shapes--specifications; Weight saving steel; Welded steel bars/shapes--specifications; Welded steel plate/sheet/strip--specifications;

ICS Code

ICS Number Code 77.140.10 (Heat-treatable steels)

Citing ASTM Standards

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